<div id="content">
    <form id="validate_form" action="index.php?route=typeresultat&action=traitement_ajout" method="post">
        <label>Libellé</label>
        <input type="text" name="LIBELLETYPERESULTAT" id="libelle" class="validate[required]"/><span id="mess_exist"></span>
        <input type="submit" id="valider" />
    </form>
</div>